type UnauthorizedListener = () => void;
const unauthorizedListeners: UnauthorizedListener[] = [];

export const authEvents = {
  onUnauthorized(listener: UnauthorizedListener) {
    unauthorizedListeners.push(listener);
    return () => {
      const index = unauthorizedListeners.indexOf(listener);
      if (index > -1) unauthorizedListeners.splice(index, 1);
    };
  },
  emitUnauthorized() {
    unauthorizedListeners.forEach(listener => listener());
  }
};